Tower Pro SG90 Micro Servo 9g | Arduino RC Robotics STEM
180 Degrees / 1 Pack
$2.99 NZD
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$2.99 NZD
Tower Pro SG90 Micro Servo 9g | Arduino RC Robotics STEM
Availability:
Tax included. Shipping from $5.99 urban / $9.99 rural — free over $66.
30-day returns on faulty items · 12-month warranty
Urban $66
Rural $88
The Tower Pro SG90 is a compact and lightweight 9g micro servo designed for Arduino, Raspberry Pi, robotics, RC vehicles, STEM projects, and motion control applications. Choose between the 180° positional version for precise angle control, or the 360° continuous rotation version for driving wheels and non-stop motion. Select your version using the Rotation Angle selector above.
- Lightweight 9g micro servo design
- 180° positional or 360° continuous rotation (select variant)
- Compatible with Arduino Servo library
- Standard 3-wire PWM control interface
- Includes multiple servo horn attachments
Quick Start
1
Connect power
Connect red to 5V and brown to GND.
2
Connect signal wire
Connect the orange signal wire to a PWM pin.
3
Install Servo library
Use the built-in Arduino Servo library.
4
Control movement
180°: servo.write(angle) sets position. 360°: servo.write() controls speed and direction (90 = stop).
Which version do I need?
180° (positional): holds a commanded angle, ideal for steering, robot arms and pan/tilt rigs.
360° (continuous): spins continuously with speed and direction control (no fixed angle), ideal for driving wheels, conveyors and turntables.
180° (positional): holds a commanded angle, ideal for steering, robot arms and pan/tilt rigs.
360° (continuous): spins continuously with speed and direction control (no fixed angle), ideal for driving wheels, conveyors and turntables.
Please note: For best reliability, power the SG90 from a dedicated 5V supply rather than directly from the Arduino 5V pin under heavy load.
Every servo is manually tested before dispatch to ensure proper operation. 180° units are checked with full-range sweeps and rapid-response cycles to verify smooth movement and positioning accuracy. 360° continuous units are tested for smooth forward and reverse rotation and a clean neutral stop.
Every servo is manually tested before dispatch to ensure proper operation. 180° units are checked with full-range sweeps and rapid-response cycles to verify smooth movement and positioning accuracy. 360° continuous units are tested for smooth forward and reverse rotation and a clean neutral stop.
Specifications
ModelTower Pro SG90
Servo Type9g Micro Servo
Gear TypePlastic
Operating Voltage4.8V – 6V DC
Control SignalPWM
Rotation Range180° positional (180° variant) / 360° continuous (360° variant)
Speed0.12 sec/60° @ 4.8V (180°) / ~110 RPM @ 4.8V (360°)
Torque1.6kg/cm @ 4.8V (180°) / ~1.3kg/cm @ 4.8V (360°)
Connector3-pin Futaba/JR style
Wire Length~25cm
Dimensions22.2 × 11.8 × 31mm
Weight9g
Getting Started
1
Connect the servo
Brown = GND, Red = 5V, Orange = signal/PWM.
2
Choose a PWM pin
Connect the orange signal wire to a PWM-capable pin such as D9.
3
Upload example code
Use the Arduino IDE Servo example.
4
Test movement
180°: rotates smoothly between positions. 360°: spins continuously, stopping near a mid value.
What's Included
1×
SG90 Servo Motor
Main Tower Pro SG90 servo unit (per servo, 180° or 360° as selected).
1×
Servo Horn Set
Multiple horn styles included.
Common Uses
Arduino robotics projects
RC steering systems (180°)
Pan/tilt camera systems (180°)
Robot arms and claws (180°)
Drive wheels and rovers (360°)
Conveyors and turntables (360°)
Common Questions
Can I use this with Arduino?
Yes, the SG90 works perfectly with Arduino using the Servo library.
What's the difference between the 180° and 360° versions?
The 180° version is a positional servo that holds a commanded angle. The 360° version is a continuous rotation servo that spins continuously, giving you control over speed and direction rather than a fixed position. Pick the one that suits your project using the Rotation Angle selector.
Can I power it directly from Arduino?
Yes for light testing, but a dedicated 5V supply is recommended.